Display panel including at least one power supply structure including common electrode configured to have predetermined area, and display device

ABSTRACT

A display panel and a display device are provided. The display panel includes an array substrate and a pixel array. The pixel array includes a plurality of subpixels, each of which includes at least one light-emitting diode that includes a first electrode and a second electrode. The array substrate includes a first power supply structure, a second power supply structure, and a plurality of pixel circuits. The first power supply structure is electrically connected to the first electrode of the light-emitting diode by the pixel circuits, and the second power supply structure is electrically connected to the second electrode of the light-emitting diode. At least one of the first power supply structure and the second power supply structure includes at least one common electrode.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is based upon and claims priority to ChinesePatent Application No. 202011400056.8, filed on Dec. 2, 2020, thecontent of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, andin particular, to a display panel and a display device.

BACKGROUND

In current display panel in which a light-emitting diode is used as alight-emitting pixel, it is necessary to provide a positive power supplyline and a negative power supply line to supply power to thelight-emitting diode. A significant voltage drop across the power supplyline is generated during displaying, which not only results in excessivepower consumption loss of the display panel, but also generates unevendisplay. Accordingly, display panels with reduced power consumption arestill needed.

SUMMARY

At least one of embodiments of the present disclosure provides a displaypanel and a display device, which can reduce power consumption loss ofthe display panel while improving uneven display due to a voltage dropacross power supply lines.

A first aspect of the present disclosure provides a display panelincluding an array substrate and a pixel array. The pixel array includesa plurality of subpixels, each of which includes at least onelight-emitting diode that includes a first electrode and a secondelectrode. The array substrate includes a first power supply structureconfigured to provide a first power supply voltage, a second powersupply structure configured to provide a second power supply voltage,and a plurality of pixel circuits. The first power supply structure iselectrically connected to the first electrode of the at least onelight-emitting diode by the plurality of pixel circuits, and the secondpower supply structure is electrically connected to the second electrodeof the at least one light-emitting diode. At least one of the firstpower supply structure and the second power supply structure includes atleast one common electrode. The display panel further includes a displayregion having an area of S₀, an area of a projection of a portion of theat least one common electrode in the display region on a plane of thedisplay panel is defined as S₁, where S₁≥0.5S₀.

A second aspect of the present disclosure provides a display deviceincluding the display panel according to any embodiments of the presentdisclosure.

In the display panel and the display device according to variousembodiments of the present disclosure, at least one power supplystructure includes the common electrode configured to have apredetermined area. Accordingly, a resistance of the power supplystructure can be reduced, thereby reducing the voltage drop of signaltransmission over the power supply structure and power consumption lossof the power supply structure while improving uneven display, whendriving the light emitting diode to emit light.

BRIEF DESCRIPTION OF DRAWINGS

In order to explain the technical solutions of some embodiments of thepresent disclosure or the related art, the accompanying drawingsreferred in the description of some embodiments of the presentdisclosure or the related art will be briefly introduced. These drawingsin the following description illustrate some embodiments of the presentdisclosure. Other drawings may be obtained by those skilled in the artbased on these drawings.

FIG. 1 is a schematic top view of a display panel according to anembodiment of the present disclosure;

FIG. 2 is a schematic structural view of a pixel circuit of a displaypanel according to an embodiment of the present disclosure;

FIG. 3 is a schematic sectional view of a display panel according to anembodiment of the present disclosure;

FIG. 4 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 5 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 6 is a schematic partial top view of the display panel shown inFIG. 3;

FIG. 7 is another schematic partial top view of the display panel shownin FIG. 3;

FIG. 8 is another schematic partial top view of the display panel shownin FIG. 3;

FIG. 9 is another schematic partial top view of the display panel shownin FIG. 3;

FIG. 10 is a schematic top view of another display panel according to anembodiment of the present disclosure;

FIG. 11 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 12 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 13 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 14 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 15 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 16 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 17 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 18A is a schematic partial top view of the display panel shown inFIG. 17;

FIG. 18B is another schematic partial top view of the display panelshown in FIG. 17;

FIG. 19 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 20 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 21 is a schematic top view of another display panel according to anembodiment of the present disclosure;

FIG. 22 is a schematic top view of another display panel according to anembodiment of the present disclosure;

FIG. 23 is a schematic sectional view of another display panel accordingto an embodiment of the present disclosure;

FIG. 24 is a schematic top view of a first power supply structure ofanother display panel according to an embodiment of the presentdisclosure; and

FIG. 25 is a schematic view of a display device according to anembodiment of the present disclosure.

DETAILED DESCRIPTION

Embodiments of the disclosure will be clearly and completely describedhereinafter with reference to the accompanying drawings in someembodiments of the present disclosure in order to make objections,technical solutions and advantages of some embodiments of the presentdisclosure clearer. It should be understood that the embodimentsdescribed below are merely some of, rather than all of the embodimentsof the present disclosure. Based on the embodiments of the presentdisclosure, all other embodiments made by those skilled in the art shallfall within the scope of the present disclosure.

The terms used in the embodiments of the present disclosure are merelyfor the purpose of describing specific embodiments, but are not intendedto limit the present disclosure. The singular forms of “a”, “said” and“the” used in the embodiments of the present disclosure and the appendedclaims are also intended to include plural forms, unless otherwisestated.

At least one of the embodiments of the present disclosure provides adisplay panel and a display device. A power supply structure for drivinga light-emitting diode is modified, such that at least one power supplystructure includes a common electrode configured to have a predeterminedarea, so as to reduce a voltage drop of signal transmission over thepower supply structure and power consumption loss of the power supplystructure while improving uneven display when driving the light-emittingdiode to emit light.

FIG. 1 shows a schematic top view of a display panel according to anembodiment of the present disclosure, and FIG. 2 shows a schematicstructural view of a pixel circuit of a display panel according to anembodiment of the present disclosure.

As shown in FIG. 1, the display panel includes a display region AAincluding a pixel array that includes a plurality of subpixels sp. Oneof the subpixels sp includes at least one light-emitting diode includinga first electrode and a second electrode.

The display panel according to an embodiment of the present disclosurefurther includes an array substrate including a first power supplystructure, a second power supply structure, and a plurality of pixelcircuits. The first power supply structure is configured to provide afirst power supply voltage, and the second power supply structure isconfigured to provide a second power supply voltage. The first powersupply structure is electrically connected to the first electrode of thelight-emitting diode by the pixel circuits, and the second power supplystructure is electrically connected to the second electrode of thelight-emitting diode. The first power supply structure, the second powersupply structure and the pixel circuits cooperate with each other todrive the light-emitting diode to emit light. FIG. 2 only illustrates analternative structure of the pixel circuit, and the present disclosureis not intended to be limited thereto. FIG. 2 illustrates a 7T1C pixelcircuit including a driving transistor Tm, 6 switching transistors (T1to T6) and a pixel capacitor C. A positive power supply voltage terminalPVDD, a negative power supply voltage terminal PVEE, a data voltageterminal Vdata, a first scan voltage terminal S1, a second scan voltageterminal S2, a reset power terminal Vref, and a light emission controlterminal Emit are also shown in FIG. 2. One of the electrodes of thelight-emitting diode E is connected to the positive power supply voltageterminal PVDD by the pixel circuit, and the other of the electrodes ofthe light-emitting diode E is connected to the negative power supplyvoltage terminal PVEE. The positive power supply voltage terminal PVDDis configured to provide a positive power supply voltage signal, and thenegative power supply voltage terminal PVEE is configured to provide anegative power supply voltage signal.

In some embodiments of the present disclosure, one of the first powersupply structure and the second power supply structure is configured toprovide the positive power supply voltage terminal, and the otherstructure is configured to provide the negative power supply voltageterminal. That is, one of the first power supply structure and thesecond power supply structure is configured to provide the positivepower supply voltage signal, and the other structure is configured toprovide the negative power supply voltage signal. In some embodiments ofthe present disclosure, at least one of the first power supply structureand the second power supply structure is designed to include at leastone common electrode. The display panel further includes a displayregion having an area S₀, and an area of an orthographic projection of aportion of the common electrode in the display region onto a plane ofthe display panel is defined as S₁, where S₁

0.5S₀. The common electrode is configured to reduce a resistance of thepower supply structure, thereby reducing a voltage drop of a signaltransmission over the power supply structure and power consumption lossof the power supply structure while improving uneven display.

In some embodiments of the present disclosure, the common electrode maybe in a strip shape or a block shape, and the common electrode may beformed with an opening. In some embodiments of the present disclosure,the common electrode further includes at least two sub-common electrodesoverlapped with each other. When calculating the area S₁, a total areaof orthographic projections of portions of the common electrodes in thedisplay region on the plane of the display panel is calculated, and anarea of the opening is subtracted from the total area during thecalculation. For the common electrode including the sub-commonelectrodes overlapped with each other, an area of an overlapping portionof the sub-common electrodes overlapped with each other is notrepeatedly calculated in a direction perpendicular to the plane wherethe display panel is located.

In an embodiment, S₁=0.6S₀. In another embodiment, S₁=0.7S₀. In someembodiments, S₁=0.9S₀. The larger S₁ becomes, the less the overallresistance of the common electrode becomes, which is more beneficial toreduce power consumption loss of the power supply structure whileimproving uneven display.

In some embodiments, the first power supply structure is configured toprovide the first power supply voltage, and the second power supplystructure is configured to provide the second power supply voltage whichis lower than the first power supply voltage. Alternatively, the firstpower supply voltage has a voltage within a range of 0 to 8V (includingendpoint values), and the second power supply voltage has a voltagewithin a range of 0 to −8V (including endpoint values).

In some embodiments, only one of the power supply structures includes acommon electrode. In some embodiments, each of the first power supplystructure and the second power supply structure includes a commonelectrode. The common electrode may be in a whole surface shape, or astrip shape or a block shape. In the display panel, each of the firstelectrode and the second electrode of the light-emitting diode may bearranged to face towards the pixel circuit. Alternatively, each of thefirst electrode and the second electrode of the light-emitting diode maybe arranged to face away from the pixel circuit. Additionally andalternatively, one of the first electrode and the second electrode ofthe light-emitting diode may be arranged to face towards the pixelcircuit, and the other electrode may be arranged to face away from thepixel circuit. In a case where the first electrode of the light-emittingdiode is disposed at a different position from the second electroderelative to the pixel circuit, the first power supply structure may bearranged at a different position from the second power supply structure.The present disclosure will be explained in detail below with referenceto some specific embodiments.

In an embodiment, the first electrode and the second electrode of thelight-emitting diode are both arranged to face towards the pixelcircuit. FIG. 3 shows a schematic sectional view of a display panelaccording to an embodiment of the present disclosure, in which an arraysubstrate 100 and a pixel array 200 are shown. Each of a plurality oflight-emitting diodes E further includes a first semiconductor layer 51,a quantum well layer 52 and a second semiconductor layer 53 laminated toeach other. The quantum well layer 52 is arranged between the firstsemiconductor layer 51 and the second semiconductor layer 53. The firstelectrode 11 is connected to the first semiconductor layer 51, and thesecond electrode 12 is connected to the second semiconductor layer 53.The first semiconductor layer 51 is arranged at a side of the secondsemiconductor layer 53 close to a plurality of pixel circuits 30.Further, the first electrode 11 is arranged at a side of the firstsemiconductor layer 51 close to the pixel circuit 30, and the secondelectrode 12 is arranged at the side of the second semiconductor layer53 close to the pixel circuit 30. FIG. 3 also illustrates a first powersupply structure 21 and a second power supply structure 22. The firstpower supply structure 21 is electrically connected to the firstelectrode 11 of the light-emitting diode E by the pixel circuit 30, andthe second power supply structure 22 is electrically connected to thesecond electrode 12 of the light-emitting diode E.

In an alternative embodiment, one of the first electrode and the secondelectrode of each light-emitting diode is arranged to face towards thepixel circuit, and the other electrode is arranged to face away from thepixel circuit. FIG. 4 shows a schematic sectional view of anotherdisplay panel according to an embodiment of the present disclosure. Asshown in FIG. 4, the first semiconductor layer 51 is arranged at theside of the second semiconductor layer 53 close to the pixel circuit 30.Further, the first electrode 11 is arranged at the side of the firstsemiconductor layer 51 close to the pixel circuit 30, and the secondelectrode 12 is arranged at a side of the second semiconductor layer 53away from the pixel circuit 30. FIG. 4 also illustrates the first powersupply structure 21 and the second power supply structure 22. The firstpower supply structure 21 is electrically connected to the firstelectrode 11 of the light-emitting diode E by the pixel circuit 30, andthe second power supply structure 22 is electrically connected to thesecond electrode 12 of the light-emitting diode E. As show in FIG. 4,the second electrode is electrically connected to the second powersupply structure 22 by a conductive connection structure 73.

In an alternative embodiment, the first electrode and the secondelectrode of the light-emitting diode are both arranged to face awayfrom the pixel circuit. FIG. 5 shows a schematic sectional view ofanother display panel according to an embodiment of the presentdisclosure. As shown in FIG. 5, the first semiconductor layer 51 isarranged at a side of the second semiconductor layer 53 away from thepixel circuit 30. Further, the first electrode 11 is arranged at a sideof the first semiconductor layer 51 away from the pixel circuit 30, andthe second electrode 12 is arranged at the side of the semiconductorlayer 53 away from the pixel circuit 30. The first power supplystructure 21 is electrically connected to the first electrode 11 of thelight-emitting diode E by the pixel circuit 30, and the second powersupply structure 22 is electrically connected to the second electrode 12of the light-emitting diode E.

In an embodiment, the common electrode is disposed in the whole displayregion. Specifically, as shown in FIG. 5, the second power supplystructure 22 includes a common electrode COM disposed in the wholedisplay region. That is, the common electrode COM is electricallyconnected to the second electrodes 12 of all of the light-emittingdiodes E in the display region. Further, only one transistor of thepixel circuit 30 is schematically shown, and the transistor includes afirst electrode d, a second electrode s, a control electrode g and anactive layer w. Alternatively, the second electrode s may be configuredto be a source electrode, the first electrode d may be configured to bea drain electrode, and the control electrode g may be configured to be agate electrode. In the illustrated embodiment, the first power supplystructure 21 is arranged in the same layer as the second electrode s andthe first electrode d of the transistor. In this embodiment, the secondpower supply structure includes the common electrode disposed in thewhole display region, a resistance of the second power supply structurecan be thus reduced, thereby reducing a voltage drop of signaltransmission over the second power supply structure and powerconsumption loss of the second power supply structure while improvinguneven display.

Specifically, with reference to FIG. 5 again, the array substratefurther includes a substrate 101 arranged at a side of the pixel circuit30 away from the light-emitting diode E. The common electrode COM isarranged between the substrate 101 and the pixel circuit 30. Further,the pixel circuit is electrically connected to the first electrode 11 bya first conductive connection structure 71. The second electrode 12 iselectrically connected to the common electrode COM by a secondconductive connection structure 72. In the illustrated embodiment, thecommon electrode of the second power supply structure can be disposed inthe whole display region.

In an embodiment, the common electrode is a strip electrode, and thepixel array of the display panel includes a plurality of subpixel rowsextending in a first direction and a plurality of subpixel columnsextending in a second direction. The second direction is intersectedwith, typically perpendicular to, the first direction. The commonelectrode includes a plurality of strip electrodes extending in thefirst direction and arranged in the second direction in the displayregion.

In an alternative embodiment, the common electrode may include aplurality of strip electrodes extending in the second direction andarranged in the first direction in the display region.

Alternatively, one of the strip electrodes corresponds to one of thesubpixel rows, or the one strip electrode corresponds to one of thesubpixel columns.

In an alternative embodiment, one of the strip electrodes may correspondto two or three of the subpixel rows, or the one strip electrode maycorrespond to two or three of the subpixel columns. Further, when thestrip electrode is disposed between the pixel circuit and the pixelarray, the strip electrode is provided with an opening in which anauxiliary electrode is disposed. The auxiliary electrode is configuredto achieve electrical connection between the power supply structures andthe electrodes of the light-emitting diodes and electrical connectionbetween the electrodes of the light-emitting diodes and the pixelcircuits.

In an alternative embodiment, the common electrode may be a blockelectrode, and the block electrode may correspond to a plurality ofsubpixel rows, or the block electrode may correspond to a plurality ofsubpixel columns. When the block electrode is disposed between the pixelcircuit and the pixel array, the block electrode is provided with anopening in which an auxiliary electrode is disposed. The auxiliaryelectrode is configured to achieve electrical connection between thepower supply structures and the electrodes of the light-emitting diodesand electrical connection between the electrodes of the light-emittingdiodes and the pixel circuits.

In an alternative embodiment, the common electrode may correspond to allthe subpixels in the display region and may be provided with a pluralityof openings. Similarly, auxiliary electrodes may be disposed in theopenings. The auxiliary electrodes are configured to achieve electricalconnection between the power supply structures and the electrodes of thelight-emitting diodes and electrical connection between the electrodesof the light-emitting diodes and the pixel circuits.

In some embodiments of the present disclosure, the common electrode ofeach of the first power supply structure and the second power supplystructure may be designed as a strip electrode or a block electrode,thereby ensuring that the common electrode has a large area to reducethe resistance of the power supply structures. The specific structure ofthe common electrode will be described with reference to the followingspecific embodiments.

Specifically, with reference to FIG. 3 again, the first power supplystructure 21 includes at least one common electrode as a first commonelectrode 1COM that is arranged at a side of the pixel circuit 30 closeto the pixel array 200. The array substrate 100 further includes aplurality of first auxiliary electrodes 41 that are disposed in the samelayer as the first common electrodes 1COM and insulated therefrom. Eachpixel circuit 30 includes at least one transistor T that includes afirst electrode d, a second electrode s, a control electrode g and anactive layer w. The first electrode d of the transistor T iselectrically connected to the first electrode 11 of the light-emittingdiode E by the first auxiliary electrode 41. Specifically, the arraysubstrate includes a gate metal layer, a source-drain metal layer and asemiconductor layer. The control electrode g is arranged in the gatemetal layer, the first electrode d and the second electrode s arearranged in the source-drain metal layer, and the active layer w isarranged in the semiconductor layer. FIG. 3 schematically illustratesthat the transistor has a top gate structure.

With reference to FIG. 3 again, the array substrate 100 further includesa plurality of second auxiliary electrodes 42 that are disposed in thesame layer as the first common electrodes 1COM and insulated therefrom.The second power supply structure 22 is electrically connected to thesecond electrode 12 of the light-emitting diode E by the secondauxiliary electrode 42. The second power supply structure 22 is disposedin the same layer as the first electrode d and the second electrode s ofthe transistor T. Alternatively, the second power supply structure 22includes a plurality of second power supply lines, one of which isconnected to the second electrodes of the plurality of light-emittingdiodes. In the illustrated embodiment shown in FIG. 3, a position of thesecond power supply structure 22 is illustrative, and the presentdisclosure is not intended to be limited thereto.

FIG. 3 illustrates that the first power supply structure 21 is disposedbetween the pixel circuit 30 and the light-emitting diode E and includesthe first common electrode. As described above, the projection area ofthe portion of the common electrode in the display region on the planeof the display panel is defined as S₁, where S₁

0.5S₀. In this embodiment, the first power supply structure includes thecommon electrode. Therefore, a resistance of the first power supplystructure can be reduced, thereby reducing a voltage drop of signaltransmission over the first power supply structure and power consumptionloss of the first power supply structure while improving uneven display.

Further, with reference to FIG. 3 again, the second power supplystructure 22 is arranged at a side of the first common electrode 1COMaway from the light-emitting diode E. Further, the second power supplystructure 22 includes a plurality of second power supply lines locatedin the same layer as the first electrode d of the transistor T. Datalines of the display panel are located in the same layer as the firstelectrode. Specifically, the second power supply lines and the datelines of the display panel extend in the same direction so as to ensuremutual insulation between the second power supply lines and the datalines. In this embodiment, the first power supply structure includes thecommon electrode, such that power consumption loss of the first powersupply structure can be reduced while improving uneven display. Thesecond power supply structure includes the second power supply lineslocated in the same layer as the first electrode of the transistor.Thus, the second power supply lines and the first electrode of thetransistor can be manufactured in the same process, such thatmanufacture of the second power supply structure would not increase athickness of a film layer of the display panel.

In an embodiment, the first common electrode shown in FIG. 3 is thestrip electrode. FIG. 6 shows a schematic partial top view of thedisplay panel shown in FIG. 3. FIG. 6 only illustrates a structure of afilm layer where the subpixels and the first power supply structure arelocated. As shown in FIG. 6, the pixel array includes a plurality ofsubpixel rows spH extending in a first direction x and a plurality ofsubpixel columns spL extending in a second direction y. The seconddirection y is intersected with, typically perpendicularly to, the firstdirection x. Each of the subpixel rows spH includes a plurality ofsubpixels sp, and the common electrode COM includes a plurality of stripelectrodes COM-1. The plurality of strip electrodes COM-1 extend in thesecond direction y and are arranged in the first direction x in thedisplay region.

In an alternative embodiment, the plurality of strip electrodes COM-1may extend in the first direction x and are arranged in the seconddirection y in the display region, and the details thereof will beomitted herein.

FIG. 6 illustrates that each strip electrode corresponds to a respectiveone of the plurality of subpixel columns. In an alternative embodiment,each strip electrode may correspond to two or more subpixel columns.FIG. 7 shows another schematic partial top view of the display panelshown in FIG. 3. FIG. 7 only illustrates a structure of a film layerwhere the subpixels and the first power supply structure are located. Asshown in FIG. 7, the strip electrodes COM-1 extend in the seconddirection y and are arranged in the first direction x in the displayregion. Further, each strip electrode COM-1 corresponds to two subpixelcolumns spL. The strip electrode COM-1 has a plurality of first openingsK1 penetrating through the strip electrode COM-1 in a thicknessdirection thereof. Each first opening K1 is provided with the firstauxiliary electrode 41 and the second auxiliary electrode 42 therein. Inthis embodiment, the area of the first common electrode can be furtherincreased, thereby further reducing the resistance of the first powersupply structure, which in turn further reduces the voltage drop ofsignal transmission over the first power supply structure and powerconsumption loss of the first power supply structure while improvinguneven display.

In an alternative embodiment, the first common electrode shown in FIG. 3may be a block electrode. FIG. 8 shows another schematic partial topview of the display panel as shown in FIG. 3. FIG. 8 only illustrates astructure of a film layer where the subpixels and the first power supplystructure are located. As shown in FIG. 8, the first common electrode isa block electrode COM-2 corresponding to the plurality of subpixel rowsspH and the plurality of subpixel columns spL. The block electrode COM-2has a plurality of first openings K1 penetrating through the blockelectrode COM-2 in a thickness direction thereof. Each first opening K1is provided with the first auxiliary electrode 41 and the secondauxiliary electrode 42 therein. In this embodiment, the area of thefirst common electrode can be further increased, thereby greatlyreducing the resistance of the first power supply structure, which inturn significantly reduces the voltage drop of signal transmission overthe first power supply structure and power consumption loss of the firstpower supply structure while improving uneven display.

FIG. 8 illustrates that each first opening corresponds to a respectiveone of the plurality of subpixels. In an embodiment of the presentdisclosure, each first opening may correspond to n subpixels, where n isgreater than or equal to 2. Further, each first opening may be providedwith n first auxiliary electrodes therein. Specifically, FIG. 9 isanother schematic partial top view of the display panel shown in FIG. 3.As shown in FIG. 9, the first common electrode is the block electrodeCOM-2 corresponding to the plurality of subpixel rows spH and theplurality of subpixel columns spL. The block electrode COM-2 has aplurality of first openings K1. Each first opening K1 corresponds tothree subpixels sp and is provided with three first auxiliary electrodes41 therein.

When each first opening K1 corresponds to a respective one of theplurality of subpixels sp, the first opening K1 is provided with thefirst auxiliary electrode 41 therein as shown in FIG. 8. In this case,two gaps are formed between sides of the first auxiliary electrode 41and respective sides of the first opening K1 in the first direction x,i.e., the left-and-right direction as shown in FIG. 8. Further, forthree first auxiliary electrodes 41 arranged in succession, six gaps arecorrespondingly formed between the sides of the first auxiliaryelectrode 41 and the respective sides of the first opening K1 in theleft-and-right direction of FIG. 8. When each first opening K1corresponds to three subpixels sp, gaps are formed between the sides ofthe first auxiliary electrode 41 and the respective sides of the firstopening K1 and between two adjacent auxiliary electrodes 41 in theleft-and-right direction of FIG. 9. Further, for the three firstauxiliary electrodes 41 arranged in succession, four gaps arecorrespondingly formed in the left-and-right direction of FIG. 9. Ifeach of the gaps has a constant width in the first direction x, in theillustrated embodiment as shown in FIG. 9, a space occupied by theopenings can be advantageously reduced, thereby increasing the area ofthe first common electrode. That is, in the embodiment where each firstopening corresponds to two or more subpixels, the auxiliary electrodesdisposed within the first opening can be insulated from each other andintensively arranged, such that the space occupied by the first openingscan be reduced.

The embodiments as described above and shown in FIGS. 6 to 9 areillustrative in which the first power supply structure includes thecommon electrode, and the shape of the common electrode and thecorresponding relationship between the common electrode and thesubpixels are described. The arrangement of the common electrode asdescribed above and shown in FIGS. 6 to 9 may also be applied to anembodiment in which the second power supply structure includes thecommon electrodes, as described hereinafter.

Further, with reference to FIG. 8 again, a distance between the side ofthe first opening K1 and the side of the auxiliary electrode (the firstauxiliary electrode 41 as schematically shown in FIG. 8) is defined asD1, where 0.1 μm

D1

5 μm. FIG. 8 shows the distance D1 extending in the first direction x.In the illustrated embodiment shown in FIG. 8, the first opening isprovided with the first auxiliary electrode and the second auxiliaryelectrode therein. In some embodiments, the first opening is merelyprovided with the first auxiliary electrode therein. The first openingis configured in a manner that the side of the first opening is spacedapart from the side of the respective auxiliary electrode at apredetermined distance, such that the common electrode is insulated fromthe auxiliary electrode while avoiding the first opening from beingformed too large so as to affect the area of the common electrode.

In a display panel of the related art, power supply lines and data linesof a power supply structure are arranged in the same film layer andextend in the same direction, and the power supply lines and scan linesintersect each other to define a region where the subpixels are located.Accordingly, the power supply line has a narrower line width. However,in the present disclosure, as shown in FIGS. 3 and 4, the first powersupply structure 21 is arranged in the different film layer from thefirst electrode d and the second electrode s of the transistor. That is,the first power supply structure 21 is located in the different filmlayer from the source electrode and the drain electrode of thetransistor. Thus, the data lines, the source electrode or the drainelectrode do not have to be avoided during manufacture of the firstpower supply structure. The first power supply structure may include astrip electrode or a block electrode with a larger width so as toincrease the area of the common electrode of the first power supplystructure. In some embodiments, the first common electrode of the firstpower supply structure may have a plurality of first openings, and theauxiliary electrodes are disposed within the first openings to connectthe pixel circuit and the electrodes of the light-emitting diodes. Insome embodiments of the present disclosure, the area of each of thefirst openings is significantly less than that of the subpixel regiondefined by the intersection of the power supply line and the scan linein the related art.

FIG. 10 shows a schematic top view of another display panel according toan embodiment of the present disclosure and only illustrates a structureof a first common electrode. As shown in FIG. 10, the first commonelectrode 1COM has at least two first openings K1 arranged in a thirddirection z. A portion of the first common electrode 1COM between twoadjacent first openings K1 has a length d1 in the third direction z, andeach first opening K1 has a length d2 in the third direction z, whereR=d1:d2 and R

3/7. FIG. 10 illustrates that each first opening K1 corresponds to asubpixel (not shown). The subpixel has a length D in the third directionz, and the length d2 of the first opening K1 in the third direction zsatisfies the following relationship: d2

70% D. The third direction z is the same as a direction along which thesubpixel rows extend, or the third direction z is the same as adirection along which the subpixel columns extend. In some embodimentsof the present disclosure, a ratio of the length of the portion of thefirst common electrode between the two adjacent first openings in thethird direction to the length of the first opening in the thirddirection is significantly greater than that of the line width of thepower supply line to a width of the subpixel region between adjacentpower supply lines in the related art. In this way, a projection area ofa portion of the first power supply structure in the display region onthe plane of the display panel is not less than 50% of the area of thedisplay region. Compared with the related art, the resistance of thefirst power supply structure can be significantly reduced, therebyreducing power consumption losses and improving uneven display.

FIG. 10 illustrates that only one first opening corresponds to onesubpixel. Further, in an embodiment in which one first openingcorresponds to two or three subpixels, the ratio of the length of theportion of the first common electrode between the two adjacent firstopenings in the third direction to the length of the first opening inthe third direction is also greater than 3/7.

FIG. 11 shows a schematic sectional view of another display panelaccording to an embodiment of the present disclosure. As shown in FIG.11, the first power supply structure 21 further includes a first powersupply line 211 electrically connected to the first common electrode1COM. The first power supply line 211 and the first electrode s of thetransistor T are arranged in the same layer. The first power supply lineand the first common electrode are connected in parallel, such that theresistance of the first power supply structure can be further reduced,thereby further reducing the voltage drop across the first power supplystructure. Specifically, in a direction perpendicular to the plane wherethe display panel is located, the first common electrode 1COM overlapswith the first power supply line 211 connected thereto, and the firstpower supply line 211 and the data lines of the display panel extend inthe same direction. FIG. 11 only schematically shows that the secondpower supply structure 22 and the control electrode g of the transistorT are arranged in the same layer, and the present disclosure is notintended to be limited thereto.

In another embodiment, the first common electrode includes at least twolaminated first sub-common electrodes. FIG. 12 shows a schematicsectional view of another display panel according to an embodiment ofthe present disclosure. As shown in FIG. 12, the first common electrode1COM includes two laminated first sub-common electrodes 1COMelectrically connected to each other, and an insulation layer 103 isinterposed between the two laminated first sub-common electrodes. Inthis embodiment, the resistance of the first power supply structure canbe further reduced, thereby further reducing the voltage drop across thefirst power supply structure. FIG. 12 merely illustrates that the secondpower supply structure 22 is located in the same layer as the controlelectrode g of the transistor T, and the present disclosure is notintended to be limited thereto.

FIG. 13 shows a schematic sectional view of another display panelaccording to an embodiment of the present disclosure. As shown in FIG.13, the first power supply structure includes the first common electrode1COM arranged at the side of the pixel circuit 30 close to the pixelarray 200. The array substrate 100 further includes the first auxiliaryelectrode 41 and the second auxiliary electrode 42, which are botharranged in the same layer as the first common electrode 1COM. The pixelcircuit 30 is connected to the first electrode 11 of the light-emittingdiode E by the first auxiliary electrode 41, and the second power supplystructure 22 is connected to the second electrode 12 of thelight-emitting diode E by the second auxiliary electrode 42. Further,the first auxiliary electrode 41 is reused as a first binding electrode,and the first electrode 11 of the light-emitting diode E is bound to thefirst auxiliary electrode 41. The second auxiliary electrode 42 isreused as a second binding electrode, and the second electrode 12 of thelight-emitting diode E is bound to the second auxiliary electrode 42.

Specifically, the first common electrode is made of materials includingtwo or more of gold, aluminum, copper, tin, silver and indium. The arraysubstrate and a light-emitting diode array are separately formed duringmanufacture of the display panel, where the array substrate includes thefirst common electrode, the first auxiliary electrode and the secondauxiliary electrode that are arranged in the same layer and made of thesame material. Further, the first common electrode, the first auxiliaryelectrode and the second auxiliary electrode are disposed at theoutermost side of the array substrate. The light-emitting diode array isthen transferred onto the array substrate, such that the first electrodeof the light-emitting diode is aligned with the first auxiliaryelectrode and the second electrode of the light-emitting diode isaligned with the second auxiliary electrode. Thereafter, the auxiliaryelectrodes are melted and then solidified to form a eutectic layerthrough a hot pressing process, and finally, the first auxiliaryelectrode is bound to the first electrode and the second auxiliaryelectrode is bound to the second electrode.

In some embodiments, the array substrate further includes an electrodeconnection layer disposed between the first power supply structure andthe light-emitting diode. The electrode connection layer includes afirst connection electrode and a second connection electrode. Further,the first auxiliary electrode is electrically connected to the firstelectrode of the light-emitting diode by the first connection electrode,and the second auxiliary electrode is electrically connected to thesecond electrode of the light-emitting diode by the second connectionelectrode. The array substrate and the light-emitting diode areseparately formed during manufacture of the display panel. Thereafter,the light-emitting diode array is transferred onto the array substrateand then bound thereto. A binding layer for binding usually has arelatively large thickness.

Specifically, in an embodiment, the electrode connection layer includesa metal connection layer and a binding layer deposited on the metalconnection layer. The metal connection layer is configured to beconnected to the auxiliary electrodes through via holes of theinsulation layer, and the binding layer is configured to bind thelight-emitting diodes and the array substrate. Further, the bindinglayer is made of materials including two or more of gold, aluminum,copper, tin, silver and indium. FIG. 14 shows a schematic sectional viewof another display panel according to an embodiment of the presentdisclosure. As shown in FIG. 14, the electrode connection layer 60includes a metal connection layer 61 and a binding layer 62. A firstinsulation layer 104 is arranged on the first common electrode 1COM, andthe metal connection layer 61 is arranged on the first insulation layer104. The metal connection layer 61 includes a first connection portion61-1 electrically connected to the first auxiliary electrode 41 by a viahole (not shown) of the first insulation layer 104, and a secondconnection portion 61-2 electrically connected to the second auxiliaryelectrode 42 by a via hole (not shown) of the first insulation layer104. The binding layer 62 includes a first binding electrode 62-1deposited on the first connection portion 61-1, and a second bindingelectrode 62-2 deposited on the second connection portion 61-2. Thefirst electrode 11 of the light-emitting diode E is bound to the firstbinding electrode 62-1, and the second electrode 12 of thelight-emitting diode E is bound to the second binding electrode 62-2. Inthis embodiment, the connection portions of the metal connection layerare connected to the respective auxiliary electrodes by the via holes ofthe first insulation layer, and the binding electrodes for binding arethen deposited on the respective connection portions to accommodate adeposition process of the binding electrodes. Accordingly, a reliableconnection between the binding electrodes and the respective auxiliaryelectrodes is obtained.

In an alternative embodiment, the electrode connection layer may merelyinclude the metal connection layer. When manufacturing the arraysubstrate, the first insulation layer is formed after forming the firstcommon electrode, the first auxiliary electrode and the second auxiliaryelectrode. The first insulation layer is then patterned to form the viaholes. Thereafter, the electrode connection layer is formed on the firstinsulation layer, and the electrode connection layer includes the firstconnection electrode connected to the first auxiliary electrode throughthe via hole, and the second connection electrode is connected to thesecond auxiliary electrode through the via hole. The binding layer isthen deposited on the electrode connection layer, and includes the firstbinding electrode deposited on the first connection electrode and thesecond binding electrode deposited on the second connection electrode.The binding electrodes are configured to realize the binding between thelight-emitting diodes and the array substrate. The structure of thedisplay panel in this embodiment shall be understood with reference toFIG. 14.

In another embodiment, the electrode connection layer is reused as thebinding layer. FIG. 15 shows a schematic sectional view of anotherdisplay panel according to an embodiment of the present disclosure. Asshown in FIG. 15, the electrode connection layer 60 includes a firstconnection electrode 60-1 bound to the first electrode 11 of thelight-emitting diode E and a second connection electrode 60-2 bound tothe second electrode 12 of the light-emitting diode E. Whenmanufacturing the array substrate 100, the first insulation layer 104 isformed after forming the first common electrode 1COM, the firstauxiliary electrode 41 and the second auxiliary electrode 42.Thereafter, the first insulation layer 104 is etched to form notches(not shown, wherein an area of each notch is greater than that of a viahole of the conventional insulation layer, such that the area of thenotch is large enough to ensure that the electrode connection layer witha larger thickness can be deposited within the notches) for exposing thefirst auxiliary electrode 41 and the second auxiliary electrode 42,respectively. The electrode connection layer 60 is then deposited withinthe notches, such that a first portion of the electrode connection layerdeposited in the notch for exposing the first auxiliary electrode 41 isformed as the first connection electrode 60-1, and a second portion ofthe electrode connection layer deposited in the notch for exposing thesecond auxiliary electrode 42 is formed as the second connectionelectrode 60-2. The light-emitting diode array is transferred onto thearray substrate and an alignment operation is performed, such that thefirst electrode of the light-emitting diode is aligned with the firstconnection electrode, and the second electrode of the light-emittingdiode is aligned with the second connection electrode. Thereafter, theconnection electrodes are melted and then solidified to form an eutecticlayer through the hot pressing process, so that the first electrode isbound to the first connection electrode, and the second electrode isbound to the second connection electrode. In this embodiment, the metalconnection layer is eliminated, thereby saving materials whilesimplifying the process.

FIGS. 14 and 15 illustrate two embodiments for binding thelight-emitting diodes and the array substrate. In the embodiment shownin FIG. 14, the connection metal layer and the binding layer are formed,and the binding layer is configured to bind the light-emitting diode.Further, the binding layer having the relatively large thickness isdeposited on the connection metal layer. The connection metal layer isconnected to circuit elements below the insulation layer through the viaholes of the insulation layer to ensure the reliable connection betweenthe binding layer and the circuit elements underneath. In addition, inthe embodiment shown in FIG. 15, the insulation layer above the circuitelements is formed with the notches for exposing the circuit elements,and the electrode connection layer is deposited within the notches toachieve an electrical connection between the electrode connection layerand the circuit elements underneath while the electrode connection layeris reused as the binding layer. These two embodiments described withreference to FIGS. 14 and 15 are also applicable to the followingembodiments of the present disclosure to achieve the binding of thelight-emitting diodes and the array substrate.

In an embodiment, the first power supply structure includes the firstcommon electrode, and the second power supply structure includes asecond common electrode. FIG. 16 shows a schematic sectional view ofanother display panel according to an embodiment of the presentdisclosure. As shown in FIG. 16, the first power supply structure 21includes the first common electrode 1COM arranged at the side of thepixel circuit 30 close to the pixel array 200. The second power supplystructure 22 includes a second common electrode 2COM disposed betweenthe first common electrode 1COM and the pixel circuit 30. The arraysubstrate 100 further includes the first auxiliary electrode 41 and thesecond auxiliary electrode 42. The first auxiliary electrode 41 and thefirst common electrode 1COM are arranged in the same layer and insulatedfrom each other, and the second auxiliary electrode 42 and the firstcommon electrode 1COM are arranged in the same layer and insulated fromeach other. The first electrode (not shown) of the transistor of thepixel circuit 30 is electrically connected to the first electrode 11 ofthe light-emitting diode E by the first auxiliary electrode 41, and thesecond common electrode 2COM is electrically connected to the secondelectrode 12 of the light-emitting diode E by the second auxiliaryelectrode 42. In this embodiment, each of the first power supplystructure and the second power supply structure includes a commonelectrode. Therefore, the resistance of each of the first power supplystructure and the second power supply structure can be reduced, whichreduces the voltage drop across each of the first power supply structureand the second power supply structure, thereby significantly reducingpower consumption loss while improving uneven display.

With continued reference to FIG. 16, the array substrate 100 furtherincludes a plurality of third auxiliary electrodes 43 arranged in thesame layer as the second common electrode 2COM. The first commonelectrode 1COM is electrically connected to the pixel circuit 30 by therespective third auxiliary electrode 43. Specifically, the pixel circuit30 includes a plurality of transistors (only one is shown). The firstcommon electrode 1COM is electrically connected to a source electrode ora drain electrode of one of the plurality of transistors (the specificstructure thereof is not shown) of the pixel circuit 30 via the thirdauxiliary electrode 43, so that the first common electrode 1COM isconnected to the first electrode 11 of the light-emitting diode E by thepixel circuit 30. In this embodiment, the second common electrode 2COMis disposed between the first common electrode 1COM and the pixelcircuit 30. A reliable connection between the first common electrode1COM and the source electrode or the drain electrode of the transistorof the pixel circuit can be achieved by providing the third auxiliaryelectrode 43. It is thus unnecessary to form a deeper and larger throughhole in an insulation layer between a film layer where the first commonelectrode 1COM is located and a film layer where the source and drainelectrodes of the transistor of the pixel circuit are located. Moreover,the third auxiliary electrode 43 and the second common electrode 2COMmay be formed in the same process without additional processes.

In addition, as shown in FIG. 16, the array substrate further includes aplurality of fifth auxiliary electrodes 45 arranged in the same layer asthe second common electrode 2COM. The first auxiliary electrode 41 iselectrically connected to the pixel circuit 30 by the respective fifthauxiliary electrode 45. The fifth auxiliary electrodes 45 and the secondcommon electrode 2COM are formed in the same process.

FIGS. 11 to 16 illustrate that the second power supply structure isarranged at the side of the first power supply structure away from thelight-emitting diode. In other embodiments, the second power supplystructure may be disposed between the first power supply structure andthe light-emitting diode, i.e., between the first common electrode andthe light-emitting diode. That is, the second power supply structure isarranged at the side of the first common electrode away from the pixelcircuit, such that the second power supply structure is arranged in adifferent layer from all the circuit elements of the pixel circuit,which can increase a design degree of freedom of the second power supplystructure. The second power supply structure may be configured to beprovided with the common electrode to reduce the resistance of thesecond power structure, thereby reducing the voltage drop across thesecond power supply structure to further reduce power consumption lossof the display panel while improving uneven display.

Specifically, FIG. 17 shows a schematic sectional view of anotherdisplay panel according to an embodiment of the present disclosure. Asshown in FIG. 17, the first power supply structure 21 includes the firstcommon electrode 1COM. The first auxiliary electrode 41 is arranged inthe same layer as the first common electrode 1COM and electricallyconnected to the first electrode 11 of the light-emitting diode E by thepixel circuit 30. The second power supply structure 22 includes thesecond common electrode 2COM disposed between the first common electrode1COM and the light-emitting diode E. The second power supply structure22 is electrically connected to the second electrode 12 of thelight-emitting diode E. In this embodiment, the second power supplystructure is configured to be provided with the common electrode, suchthat the resistance of the second power supply structure can be reduced,thereby reducing the voltage drop across the second power supplystructure to further reduce power consumption loss of the display panelwhile further improving uneven display. In this embodiment, the secondcommon electrode may be a strip electrode or a block electrode. Thearrangement of the second common electrode shall be understood withreference to the embodiments shown in FIGS. 6 to 9 as described above.

With reference to FIG. 17 again, the array substrate 100 furtherincludes a plurality of fourth auxiliary electrodes 44 arranged in thesame layer as the second common electrode 2COM. The first auxiliaryelectrode 41 is electrically connected to the first electrode 11 of thelight-emitting diode E by the respective fourth auxiliary electrode 44.Further, the fourth auxiliary electrodes 44 and the second commonelectrode 2COM are formed in the same process.

FIG. 18A shows a schematic partial top view of the display panel asshown in FIG. 17, and merely illustrates a structure of a film layerwhere the subpixels and the second power supply structure are located.As shown in FIG. 18A, the subpixel rows spH extend in the firstdirection x and the subpixel columns spL extend in the second directiony. The second common electrode 2COM is formed with a plurality of secondopenings K2 penetrating through the second common electrode 2COM in athickness direction thereof. The fourth auxiliary electrode 44 isdisposed within the second opening K2. FIG. 18A illustrates that onesubpixel sp corresponds to one second opening K2, in which only onefourth auxiliary electrode 44 is disposed. The fourth auxiliaryelectrode 44 is configured to electrically connect the pixel circuit andthe first electrode of the light-emitting diode. An area of the secondopening K2 may be configured to be small enough to maximize an area ofthe second common electrode in the display region in a case that thefourth auxiliary electrodes 44 and the second common electrode 2COM areinsulated from each other.

In an alternative embodiment, one second opening may correspond to twosubpixels and may be provided with two fourth auxiliary electrodestherein. In another embodiment, one second opening may correspond tothree subpixels and may be provided with three fourth auxiliaryelectrodes therein, and the illustration thereof is omitted herein.

Specifically, FIG. 18B shows another schematic partial top view of thedisplay panel shown in FIG. 17. A schematic top view of the first powersupply structure is merely shown in FIG. 18B. The first power supplystructure includes the first common electrode 1COM having the pluralityof first opening K1. Each first opening is provided with the firstauxiliary electrode 41 therein. The first auxiliary electrode 41 isconfigured to electrically connect the pixel circuit 30 and the firstelectrode 11 of the light-emitting diode E. In this embodiment, thefirst power supply structure is disposed between the pixel circuit 30and the light-emitting diode E, and the first common electrode 1COM isonly formed with the first openings K1. Therefore, an area of the firstopening K1 can be configured to be small enough to increase an area ofthe first common electrode 1COM in the display region in a case that thefirst common electrode 1COM and the first auxiliary electrodes 41 areinsulated from each other.

Specifically, referring to FIG. 17 again, the array substrate 100further includes a binding layer 70. The second power supply structure22 is arranged in the binding layer 70 so as to be bound to the secondelectrode 12 of the light-emitting diode E. Correspondingly, the fourthauxiliary electrode 44 is bound to the first electrode 11 of thelight-emitting diode E. The material and the binding process of thebinding layer 70 can be referred to the embodiments as described above,and the details thereof will be omitted herein. The second power supplystructure is arranged in the binding layer, such that the second powersupply structure is provided with the common electrode, thereby reducingthe resistance of the second power supply structure without increasing afilm thickness of the display panel.

FIG. 19 shows a schematic sectional view of another display panelaccording to an embodiment of the present disclosure. As shown in FIG.19, the array substrate 100 further includes the electrode connectionlayer 60 and a second insulation layer 105 disposed between the secondpower supply structure 22 and the electrode connection layer 60. Theelectrode connection layer 60 is arranged at the side of the secondpower supply structure 22 away from the first common electrode 1COM.Further, the electrode connection layer 60 includes the first connectionelectrode 60-1 and the second connection electrode 60-2. The firstauxiliary electrode 41 is electrically connected to the first connectionelectrode 11 of the light-emitting diode E by the first connectionelectrode 60-1, and the second power supply structure 22 is electricallyconnected to the second electrode 12 of the light-emitting diode E bythe second connection electrode 60-2. Alternatively, the electrodeconnection layer may include the metal connection layer and the bindinglayer, i.e., has the same structure as that of the electrode connectionlayer as shown in FIG. 14. Alternatively, the electrode connection layeris the binding layer, i.e., has the same structure as that of theelectrode connection layer as shown in FIG. 15.

FIG. 20 shows a schematic sectional view of another display panelaccording to an embodiment of the disclosure. As shown in FIG. 20, thesecond power supply structure 22 includes a second upper power supplyelectrode 22-1 and a second lower power supply electrode 22-2electrically connected with each other. The second upper power supplyelectrode 22-1 is disposed between the first common electrode 1COM andthe light-emitting diode E. The second lower power supply electrode 22-2includes a plurality of second power supply lines located in the samelayer as the first electrode d of the transistor T. Specifically, thedata lines of the display panel are located in the same layer as thefirst electrode d. The second power supply lines are configured suchthat the second power supply lines and the data lines extend in the samedirection to ensure that the second power supply lines are insulatedfrom the data lines and the second power supply lines are insulated fromthe first electrode and the second electrode. In this embodiment, thesecond upper power supply electrode and the second lower power supplyelectrode are connected to each other, such that the resistance of thesecond power supply structure is further reduced. Moreover, the secondpower supply lines of the second lower power supply electrode arelocated in the same layer as the first electrode of the transistor.Therefore, it is unnecessary for the display panel to be provided withadditional film layer structure.

In some alternative embodiments, one subpixel may include at least twolight-emitting diodes, which are connected to the same first auxiliaryelectrode. That is, the light-emitting diodes of the one subpixel areconnected to the same pixel circuit, which can reduce influence of poorbinding of the light-emitting diodes to the array substrate on thedisplay of the subpixels. In the one subpixel, some of thelight-emitting diodes are poorly bound, and the remaining well-boundlight-emitting diodes can still allow the subpixels to be displayed.

FIGS. 3, 11 to 16 each illustrates that the first power supply structureis arranged at the side of the second power supply structure close tothe pixel array. In this case, when the first power supply structureincludes the common electrode, the first auxiliary electrode and thesecond auxiliary electrode are arranged in the same layer as the commonelectrode. Further, the first power supply structure is connected to thepixel circuit that is connected to the first electrode of thelight-emitting diode by the first auxiliary electrode, and the secondpower supply structure is connected to the second electrode of thelight-emitting diode by the second auxiliary electrode. Specifically,FIG. 21 shows a schematic top view of another display panel according toan embodiment of the present disclosure. As shown in FIG. 21, only thefirst power supply structure 21 and the light-emitting diodes E of thesubpixels are simply illustrated. For example, one subpixel sp includestwo light-emitting diodes E. As shown in FIG. 21, the first power supplystructure 21 includes the first common electrode 1COM having theplurality of first openings K1, each of which is provided with the firstauxiliary electrode 41 and the second auxiliary electrode 42 therein.The first electrodes (not shown) of the two light-emitting diodes E areconnected to the same first auxiliary electrode 41, and the secondelectrodes (not shown) of the two light-emitting diodes E are connectedto the same second auxiliary electrode 42. Each of embodiments, in whichthe first common electrode is a stripe electrode and one first openingcorresponds to two or three subpixels, shall be understood by referenceherein, and the details thereof will be omitted herein.

In the above embodiments as shown in FIGS. 19 and 20, the second powersupply structure is arranged at the side of the first power supplystructure close to the pixel array. In this case, when the second powersupply structure includes the common electrode, the common electrode isgenerally provided with the first auxiliary electrode to ensure that thepixel circuit below the second power supply structure can beelectrically connected to the first electrode of the light-emittingdiode by the first auxiliary electrode. Specifically, FIG. 22 shows aschematic top view of another display panel according to an embodimentof the present disclosure. As shown in FIG. 22, only the second powersupply structure 22 and the light-emitting diodes E of the subpixels aresimply illustrated. For example, one subpixel sp includes twolight-emitting diodes E. As illustrated in FIG. 22, the second powersupply structure 22 includes the second common electrode 2COM having theplurality of second openings K2, each of which is provided with thefirst auxiliary electrode 41 therein. The first electrodes (not shown)of the two light-emitting diodes E are connected to the same firstauxiliary electrode 41, and the second electrodes (not shown) of the twolight-emitting diodes E are electrically connected to the second commonelectrode 2COM. Each of embodiments, in which the second commonelectrode is a strip electrode and one second opening corresponds to twoor three subpixels, shall be understood by reference herein, and thedetails thereof will be omitted herein.

Further, FIG. 23 shows a schematic sectional view of another displaypanel according to an embodiment of the present disclosure. As shown inFIG. 23, the display panel further includes a light shielding layer 80arranged at a side of the first power supply structure 21 and the secondpower supply structure 22 close to the light-emitting diode E. The lightshielding layer 80 is overlapped with the first power supply structure21 or the second power supply structure 22 in a direction perpendicularto a plane where the array substrate 100 is located. The light shieldinglayer 80 includes a plurality of third openings K3 overlapped with thelight-emitting diodes E in the direction perpendicular to the planewhere the array substrate 100 is located. FIG. 23 illustrates that thefirst power supply structure 21 is arranged at the side of the secondpower supply structure 22 away from the pixel circuit 30. In anembodiment in which the first power supply structure 21 includes thefirst common electrode and/or the second power supply structure 22includes the second common electrode, the common electrode of a largearea may reflect ambient light, which in turn affects an effect of thedisplay panel. In some embodiments of the present disclosure, the lightshielding layer is provided to shield the common electrode of the largearea, thereby preventing the ambient light from being reflected by thecommon electrode to ensure the display effect of the display panel.

Further, in an embodiment, the common electrode includes a fourthopening, into which an insulation layer directly in contact with thecommon electrode is filled. The common electrode is usually made of ametal material, and upper and lower insulation layers adjacent to thecommon electrode are usually made of inorganic materials. In thisembodiment, the common electrode is formed with the fourth opening, suchthat an adhesive force between the common electrode of the large areaand its adjacent upper and lower insulation layers can be increased,thereby avoiding film peeling from being occurred in the commonelectrode of the large area. FIG. 24 shows a schematic top view of thefirst power supply structure of the display panel according to anembodiment of the present disclosure. As shown in FIG. 24, the firstpower supply structure 21 includes the first common electrode 1COMincluding the plurality of first openings K1 and a plurality of fourthopenings K4. In some embodiments, the first auxiliary electrode isdisposed in the first opening K1. In some embodiments, the firstauxiliary electrode and the second auxiliary electrode are disposed inthe first opening K1. The fourth opening K4 is configured to achievereliable binding between the first common electrode 1COM and the upperand lower insulation layers. The fourth opening K4 has an area that isless than the area of the first opening K1. In order to achieve thereliable binding between the common electrode and the upper and lowerinsulation layers at different positions, a plurality of fourth openingsmay be formed in the common electrode at a position corresponding to onesubpixel, and the fourth openings are arranged in a higher density thanthat of the first openings. FIG. 24 merely illustrates that the firstcommon electrode includes the first openings. In an embodiment where thefirst common electrode is a strip electrode, the fourth openings mayalso be formed in the strip electrode, which will not be illustratedherein. In addition, in an embodiment where the second power supplystructure includes the common electrode, the arrangement of the fourthopenings of common electrode may be understood by reference herein, andthe details thereof are omitted herein.

In some embodiments of the present disclosure, the second commonelectrode overlaps with the first common electrode in the directionperpendicular to the plane where the array substrate is located. In thedisplay region, an area of an overlapping portion of the second commonelectrode and the first common electrode is defined as S₂, and an areaof an orthographic projection of a portion of the second commonelectrode in the display region on the plane of display panel is definedas S₃, where S₂

50% S₃. In this embodiment, an area of an orthographic projection of aportion of the first common electrode in the display region on thedisplay panel is not less than 50% of the area of the display region,and an area of an orthographic projection of a portion of the secondcommon electrode in the display region on the display panel is not lessthan 50% of the area of the display region. Further, the area of theoverlapping portion of the first common electrode and the second commonelectrode is relatively large. In accordance with one or more embodimentof the present disclosure, the resistance of the first power supplystructure and the second power supply structure can be significantlyreduced, thereby reducing the voltage drop of the signal transmissionover the power supply structures and power consumption loss of the powersupply structures while improving uneven display.

Embodiments of the present disclosure also provide a display device.FIG. 25 shows a schematic view of a display device according to anembodiment of the present disclosure. As shown in FIG. 25, the displaydevice includes the display panel 00 according to any one of theembodiments of the present disclosure as described above. The structureof the display panel has been described in the above embodiments, andthe details thereof will be omitted herein. The display device in theembodiment of the present disclosure may be any device having a displayfunction, such as a mobile phone, a tablet computer, a notebookcomputer, an electronic paper book, a television, and a smart wearableproduct.

Some embodiments of the present disclosure have been described above andthe present disclosure is not intended to be limited thereto. Anymodification, equivalent replacement, improvement and the like madewithin the spirit and principle of the present disclosure shall fallwithin the scope of the present disclosure.

Finally, it should be noted that the above embodiments are onlyillustrative for the technical solutions of the present disclosure,rather than limiting the present disclosure. Although the presentdisclosure has been described in detail with reference to the foregoingembodiments, it would be appreciated by those skilled in the art thatthe technical solutions as described in the foregoing embodiments can bemodified, or some or all of the technical features are equivalentlyreplaced. These modifications or replacements shall not depart from thescope of the technical solutions of the embodiments of the presentdisclosure.

What is claimed is:
 1. A display panel, comprising: a pixel arraycomprising a plurality of subpixels, each subpixel comprising at leastone light-emitting diode that comprises a first electrode and a secondelectrode; and an array substrate comprising a first power supplystructure configured to provide a first power supply voltage, a secondpower supply structure configured to provide a second power supplyvoltage, and a plurality of pixel circuits, wherein the first powersupply structure is electrically connected to the first electrode of theat least one light-emitting diode by a pixel circuit of the plurality ofpixel circuits, and the second power supply structure is electricallyconnected to the second electrode of the at least one light-emittingdiode, wherein at least one of the first power supply structure and thesecond power supply structure comprises at least one common electrode,wherein the display panel further comprises a display region having anarea of S₀, and an area of an orthographic projection of a portion ofthe at least one common electrode in the display region on a plane ofthe display panel is defined as S₁, where S₁≥0.5S₀, wherein the firstpower supply structure comprises the at least one common electrode thatis configured to be a first common electrode, and the first commonelectrode is arranged at a side of the plurality of pixel circuits thatis close to the pixel array, wherein the array substrate furthercomprises a plurality of first auxiliary electrodes arranged in the samelayer as the first common electrode, and each first auxiliary electrodeis insulated from the first common electrode, wherein each of theplurality of pixel circuits comprises a transistor that comprises afirst electrode, a second electrode and a control electrode, and thefirst electrode of the transistor is electrically connected to the firstelectrode of the at least one light-emitting diode by the firstauxiliary electrode, wherein the array substrate further comprises aplurality of second auxiliary electrodes arranged in the same layer asthe first common electrode, and each second auxiliary electrode isinsulated from the first common electrode, and wherein the second powersupply structure is electrically connected to the second electrode ofthe at least one light-emitting diode by the second auxiliary electrode.2. The display panel according to claim 1, wherein the first commonelectrode has a plurality of first openings penetrating through thefirst common electrode in a thickness direction of the first commonelectrode, and at least one of the plurality of first auxiliaryelectrodes is disposed in each first opening.
 3. The display panelaccording to claim 2, wherein the first common electrode comprises atleast two first openings arranged in a third direction; and a ratio of alength of a portion of the first common electrode between two adjacentfirst openings in the third direction to a length of each first openingin the third direction is defined as R, where R≥3/7.
 4. The displaypanel according to claim 1, wherein the first power supply structurefurther comprises a first power supply line electrically connected tothe first common electrode, and the first power supply line is locatedin the same layer as the first electrode of the transistor; or the firstcommon electrode comprises at least two first sub-common electrodeslaminated and electrically connected to each other, and an insulationlayer is provided between two adjacent first sub-common electrodes. 5.The display panel according to claim 1, wherein: the first auxiliaryelectrode is reused as a first binding electrode, the first electrode ofthe at least one light-emitting diode is bound to the first auxiliaryelectrode, and the second auxiliary electrode is reused as a secondbinding electrode, and the second electrode of the at least onelight-emitting diode is bound to the second auxiliary electrode; or thearray substrate further comprises: an electrode connection layerdisposed between the first common electrode and the at least onelight-emitting diode; and a first insulation layer disposed between thefirst common electrode and the electrode connection layer, wherein theelectrode connection layer comprises a first connection electrode and asecond connection electrode, wherein the first auxiliary electrode iselectrically connected to the first electrode of the at least onelight-emitting diode by the first connection electrode, and the secondauxiliary electrode is electrically connected to the second electrode ofthe at least one light-emitting diode by the second connectionelectrode, and wherein the first connection electrode is bound to thefirst electrode of the at least one light-emitting diode, and the secondconnection electrode is bound to the second electrode of the at leastone light-emitting diode.
 6. The display panel according to claim 1,wherein: the second power supply structure comprises the at least onecommon electrode that is configured to be a second common electrode, thesecond common electrode is disposed between the first common electrodeand the plurality of pixel circuits, and the array substrate furthercomprises a plurality of third auxiliary electrodes arranged in the samelayer as the second common electrode, wherein the first common electrodeis electrically connected to the pixel circuits by the third auxiliaryelectrodes; or the second power supply structure is arranged at a sideof the first common electrode away from the at least one light-emittingdiode, and comprises a plurality of second power supply lines located inthe same layer as the first electrode of the transistor.
 7. The displaypanel according to claim 1, wherein: the second power supply structurecomprises a second upper power supply electrode and a second lower powersupply electrode electrically connected to each other; the second upperpower supply electrode is disposed between the first common electrodeand the at least one light-emitting diode; and the second lower powersupply electrode comprises a plurality of second power supply lineslocated in the same layer as the first electrode of the transistor. 8.The display panel according to claim 1, wherein one of the plurality ofsubpixels comprises at least two light-emitting diodes that areconnected to the same first auxiliary electrode.
 9. The display panelaccording to claim 1, wherein: the at least one light-emitting diodefurther comprises a first semiconductor layer, a quantum well layer anda second semiconductor layer that are laminated to each other, and thequantum well layer is disposed between the first semiconductor layer andthe second semiconductor layer; the first electrode is connected to thefirst semiconductor layer, and the second electrode is connected to thesecond semiconductor layer; and the first semiconductor layer isarranged at a side of the second semiconductor layer close to theplurality of pixel circuits, the first electrode is arranged at a sideof the first semiconductor layer close to the plurality of pixelcircuits, and the second electrode is arranged at the side of the secondsemiconductor layer close to the plurality of pixel circuits; or thefirst semiconductor layer is arranged at a side of the secondsemiconductor layer close to the plurality of pixel circuits, the firstelectrode is arranged at a side of the first semiconductor layer closeto the plurality of pixel circuits, and the second electrode is arrangedat a side of the second semiconductor layer away from the plurality ofpixel circuits; or the first semiconductor layer is arranged at a sideof the second semiconductor layer away from the plurality of pixelcircuits, the first electrode is arranged at a side of the firstsemiconductor layer away from the plurality of pixel circuits, and thesecond electrode is arranged at the side of the second semiconductorlayer away from the plurality of pixel circuits.
 10. The display panelaccording to claim 1, wherein the at least one common electrode furthercomprises a plurality of fourth openings that are filled with aninsulation layer in direct contact with the at least one commonelectrode.
 11. The display panel according to claim 1, wherein: thepixel array comprises a plurality of subpixel rows extending in a firstdirection and a plurality of subpixel columns extending in a seconddirection, and the second direction is intersected with the firstdirection; and the at least one common electrode comprises a pluralityof strip electrodes extending in the first direction and arranged in thesecond direction in the display region or extending in the seconddirection and arranged in the first direction in the display region. 12.The display panel according to claim 1, wherein: each of the pluralityof first openings corresponds to n subpixels of the plurality ofsubpixels, where n is an integer greater than 1; and wherein n firstauxiliary electrodes of the plurality of first auxiliary electrodes aredisposed in each first opening.
 13. A display panel, comprising: a pixelarray comprising a plurality of subpixels, each subpixel comprising atleast one light-emitting diode that comprises a first electrode and asecond electrode; and an array substrate comprising a first power supplystructure configured to provide a first power supply voltage, a secondpower supply structure configured to provide a second power supplyvoltage, and a plurality of pixel circuits, wherein the first powersupply structure is electrically connected to the first electrode of theat least one light-emitting diode by a pixel circuit of the plurality ofpixel circuits, and the second power supply structure is electricallyconnected to the second electrode of the at least one light-emittingdiode, wherein at least one of the first power supply structure and thesecond power supply structure comprises at least one common electrode,wherein the display panel further comprises a display region having anarea of S₀, and an area of an orthographic projection of a portion ofthe at least one common electrode in the display region on a plane ofthe display panel is defined as S₁, where S₁≥0.5S₀, wherein the firstpower supply structure comprises the at least one common electrode thatis configured to be a first common electrode, and the first commonelectrode is arranged at a side of the plurality of pixel circuits thatis close to the pixel array, wherein the array substrate furthercomprises a plurality of first auxiliary electrodes arranged in the samelayer as the first common electrode, and each first auxiliary electrodeis insulated from the first common electrode, wherein each of theplurality of pixel circuits comprises a transistor that comprises afirst electrode, a second electrode and a control electrode, and thefirst electrode of the transistor is electrically connected to the firstelectrode of the at least one light-emitting diode by the firstauxiliary electrode, and wherein the second power supply structure isdisposed between the first common electrode and the at least onelight-emitting diode.
 14. The display panel according to claim 13,wherein the second power supply structure comprises the at least onecommon electrode that is configured to be a second common electrode. 15.The display panel according to claim 14, wherein the array substratefurther comprises a plurality of fourth auxiliary electrodes arranged inthe same layer as the second common electrode; and the first auxiliaryelectrode is electrically connected to the first electrode of the atleast one light-emitting diode by the plurality of fourth auxiliaryelectrodes.
 16. The display panel according to claim 15, wherein thesecond common electrode is provided with a plurality of second openingspenetrating through the second common electrode in a thickness directionof the second common electrode, and one of the plurality of fourthauxiliary electrodes is disposed in one of the plurality of secondopenings.
 17. The display panel according to claim 14, wherein: thesecond common electrode overlaps with the first common electrode in adirection perpendicular to the plane of the array substrate; and an areaof an overlapping portion of the second common electrode and the firstcommon electrode in the display region is defined as S₂, and an area ofan orthographic projection of a portion of the second common electrodein the display region on the plane of the display panel is defined asS₃, where S₂≥0.5S₃.
 18. The display panel according to claim 13, whereinthe array substrate further comprises a binding layer, and the secondpower supply structure is arranged in the binding layer and is bound tothe second electrode of the at least one light-emitting diode.
 19. Thedisplay panel according to claim 13, wherein the array substrate furthercomprises: an electrode connection layer arranged at a side of thesecond power supply structure away from the first common electrode; anda second insulation layer disposed between the second power supplystructure and the electrode connection layer, wherein the electrodeconnection layer comprises a first connection electrode and a secondconnection electrode, and wherein the first auxiliary electrode iselectrically connected to the first electrode of the at least onelight-emitting diode by the first connection electrode, and the secondpower supply structure is electrically connected to the second electrodeof the at least one light-emitting diode by the second connectionelectrode.
 20. A display device, comprising a display panel, the displaypanel comprising: a pixel array comprising a plurality of subpixels,each subpixel comprising at least one light-emitting diode thatcomprises a first electrode and a second electrode; and an arraysubstrate comprising a first power supply structure configured toprovide a first power supply voltage, a second power supply structureconfigured to provide a second power supply voltage, and a plurality ofpixel circuits, wherein the first power supply structure is electricallyconnected to the first electrode of the at least one light-emittingdiode by a pixel circuit of the plurality of pixel circuits, and thesecond power supply structure is electrically connected to the secondelectrode of the at least one light-emitting diode, wherein at least oneof the first power supply structure and the second power supplystructure comprises at least one common electrode, wherein the displaypanel further comprises a display region having an area of S₀, and anarea of an orthographic projection of a portion of the at least onecommon electrode in the display region on a plane of the display panelis defined as S₁, where S₁≥0.5S₀, wherein the first power supplystructure comprises the at least one common electrode that is configuredto be a first common electrode, and the first common electrode isarranged at a side of the plurality of pixel circuits that is close tothe pixel array; wherein the array substrate further comprises aplurality of first auxiliary electrodes arranged in the same layer asthe first common electrode, and each first auxiliary electrode isinsulated from the first common electrode; wherein each of the pluralityof pixel circuits comprises a transistor that comprises a firstelectrode, a second electrode and a control electrode, and the firstelectrode of the transistor is electrically connected to the firstelectrode of the at least one light-emitting diode by the firstauxiliary electrode; wherein the array substrate further comprises aplurality of second auxiliary electrodes arranged in the same layer asthe first common electrode, and each second auxiliary electrode isinsulated from the first common electrode; and wherein the second powersupply structure is electrically connected to the second electrode ofthe at least one light-emitting diode by the second auxiliary electrode.